Foot switch



FIG. 1 is a perspective view of a foot switch showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a front elevational view thereof. 

I claim the ornamental design for a foot switch, as shown. 